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Manual Lincoln Electric SVM138-A

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  • Lincoln Electric SVM138-A - page 1

    SVM138-A June, 1998 Safety Depends on Y ou Lincoln arc welding equipment is designed and built with safety in mind. However , your overall safety can be increased by proper installation. . . and thoughtful operation on your part. DO NOT INST ALL, OPERA TE OR REP AIR THIS EQUIPMENT WITHOUT READ- ING THIS MANUAL AND THE SAFETY PRECAUTIONS CON- T AINE ...

  • Lincoln Electric SVM138-A - page 2

    Retur n to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC FOR ENGINE powered equipment. 1.a. T urn the engine off before troubleshooting and maintenance work unless the maintenance work requires it to be running. ____________________________________________________ 1.b. Operate engines in open, well-ventilated areas or ve ...

  • Lincoln Electric SVM138-A - page 3

    Retur n to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC SAFETY ii ii ARC RA YS can burn. 4.a. Use a shield with the proper filter and cover plates to protect your eyes from sparks and the rays of the arc when welding or observing open arc welding. Headshield and filter lens should conform to ANSI Z87. I standards. 4.b. ...

  • Lincoln Electric SVM138-A - page 4

    Retur n to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC SAFETY iii iii FOR ELECTRICALL Y powered equipment. 8.a. T urn off input power using the disconnect switch at the fuse box before working on the equipment. 8.b. Install equipment in accordance with the U.S. National Electrical Code, all local codes and the manufact ...

  • Lincoln Electric SVM138-A - page 5

    Retur n to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC SAFETY iv iv PRÉCAUTIONS DE SÛRETÉ Pour votre propre protection lire et observer toutes les instructions et les précautions de sûreté specifiques qui parraissent dans ce manuel aussi bien que les précautions de sûreté générales suiv- antes: Sûreté Pour ...

  • Lincoln Electric SVM138-A - page 6

    MASTER T ABLE OF CONTENTS v v Page Safety .................................................................................................................................................i-iv Installation ............................................................................................................................. Section A T echnica ...

  • Lincoln Electric SVM138-A - page 7

    MASTER T ABLE OF CONTENTS (cont’d) vi vi T roubleshooting .................................................................................................................... Section F How to Use T roubleshooting Guide ............................................................................................F-2 PC Board T roubleshooting Procedu ...

  • Lincoln Electric SVM138-A - page 8

    NOTES vii vii LN-9 GMA Wire Feeder Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC ...

  • Lincoln Electric SVM138-A - page 9

    T ABLE OF CONTENTS - INST ALLA TION SECTION - Section A-1 Section A-1 Installation T echnical Specifications ..............................................................................................................A-2 Installing the LN-9GMA 2-Roll and 4-Roll Models ......................................................................A-3 Attac ...

  • Lincoln Electric SVM138-A - page 10

    INST ALLA TION A-2 A-2 LN-9 GMA Wire Feeder Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC TECHNICAL SPECIFICA TIONS INPUT POWER Supplied by power source: 1 15 V AC, 50/60 Hz., 350 V A WIRE FEED SPEED 80 to 980 inches per min ...

  • Lincoln Electric SVM138-A - page 11

    INST ALLING THE LN-9 GMA 2-ROLL AND 4-ROLL MODELS A TT ACHING THE WIRE REEL ST AND Both the 2-Roll and 4-Roll LN-9 GMA are shipped with- out the wire reel stand attached. The screws and wash- ers for mounting the wire reel stand are included with the LN-9 GMA (fastened in their respective mounting holes). T o attach the stand: 1. Remove the three 3 ...

  • Lincoln Electric SVM138-A - page 12

    ROUTING THE ELECTRODE The electrode supply may be either from reels, Readi- Reels, spools, or bulk packaged drums or reels. Observe the following precautions: • The electrode must be routed to the wire feed unit so that the bends in the wire are at a minimum. The force required to pull the wire from the reel into the wire feed unit must be kept a ...

  • Lincoln Electric SVM138-A - page 13

    INST ALLA TION A-5 A-5 LN-9 GMA Wire Feeder Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC FIGURE A.2 – STRAIN RELIEF CLAMP CONNECTING THE POWER INPUT CABLE ASSEMBL Y TO THE LN-9F CONTROL BOX 1. See Figure A.3. Connect the ...

  • Lincoln Electric SVM138-A - page 14

    Figure A.8 is a connection diagram for connecting the LN-9 GMA to V300 power sources. The connection is made with a K596 cable assembly , which has an amphenol connection rather than a terminal strip con- nection at the power source. Depending on the power source and process you are using, the jumpers on the LN-9 GMA voltage board may have to be ch ...

  • Lincoln Electric SVM138-A - page 15

    INST ALLA TION A-7 A-7 LN-9 GMA Wire Feeder Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC FIGURE A.4 – CONNECTION OF LN-9 GMA TO DC-250, DC-400, and CV/CVI POWER SOURCES TO LN-9 GMA INPUT CABLE PLUG Above diagram shows ele ...

  • Lincoln Electric SVM138-A - page 16

    TO LN-9 GMA INPUT CABLE PLUG INST ALLA TION A-8 A-8 LN-9 GMA Wire Feeder Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC FIGURE A.5 – CONNECTION OF LN-9 GMA TO DC-600 POWER SOURCES Above diagram shows electrode connected pos ...

  • Lincoln Electric SVM138-A - page 17

    INST ALLA TION A-9 A-9 LN-9 GMA Wire Feeder Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC FIGURE A.6 – CONNECTION OF LN-9 GMA TO DC-1000 POWER SOURCES TO LN-9 GMA INPUT CABLE PLUG Above diagram shows electrode connected po ...

  • Lincoln Electric SVM138-A - page 18

    INST ALLA TION A-10 A-10 LN-9 GMA Wire Feeder Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC FIGURE A.7 – CONNECTION OF LN-9 GMA TO PULSE POWER 500 POWER SOURCES TO LN-9 GMA INPUT CABLE PLUG Above diagram shows electrode co ...

  • Lincoln Electric SVM138-A - page 19

    INST ALLA TION A-11 A-11 LN-9 GMA Wire Feeder Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC FIGURE A.8 – CONNECTION OF LN-9 GMA TO V300 POWER SOURCES ELECTRODE CABLE TO LN-9 GMA TO WORK 14 PIN AMPHENOL INVERTEC POWER SOURC ...

  • Lincoln Electric SVM138-A - page 20

    INST ALLA TION A-12 A-12 LN-9 GMA Wire Feeder Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC MACHINE GROUNDING LN-9 GMA wire feeders are grounded to the power source through the input cable. The power source grounding cable m ...

  • Lincoln Electric SVM138-A - page 21

    INST ALLA TION A-13 A-13 LN-9 GMA Wire Feeder Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC CONNECTING THE GUN CABLE T O THE WIRE FEEDER A variety of gun and cable assemblies are available for the LN-9 GMA models. See the Ac ...

  • Lincoln Electric SVM138-A - page 22

    HOOKING UP GMA SHIELDING GAS CYLINDER may explode if damaged. • Gas under pressure is explosive. •· Always keep gas cylinders in an upright position and always keep them chained to the undercarriage or a stationary support. See American National Standard Z-49.1, "Safety in W elding and Cutting," published by the American W elding Soc ...

  • Lincoln Electric SVM138-A - page 23

    T ABLE OF CONTENTS - OPERA TION SECTION - Section B-1 Section B-1 LN-9 GMA Wire Feeder Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC Operation Operating Instructions .................................................................................................................B-2 Safety Precautions .......... ...

  • Lincoln Electric SVM138-A - page 24

    Retur n to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC B-2 B-2 LN-9 GMA Wire Feeder OPERA TING INSTRUCTIONS Read and understand this entire section of operating instructions operating the machine. SAFETY PRECAUTIONS ELECTRIC SHOCK c ...

  • Lincoln Electric SVM138-A - page 25

    GENERAL DESCRIPTION The LN-9 GMA 2-Roll and 4-Roll semiautomatic wire feeder models feature the precise "set and forget" dig- ital procedure control and the other welding and oper- ator features pioneered by the original LN-9 models. In addition, the LN-9 GMA models also have the fol- lowing advantages for small wire gas metal arc weld- i ...

  • Lincoln Electric SVM138-A - page 26

    DC CONST ANT VOL T AGE POWER SOURCES The following welding system power sources are avail- able for use with all LN-9 GMA models: The Idealarc ® DC-250, DC-400, CV -400, CV -500 and, DC-600 are recommended for use with any LN-9 GMA model, as well as the Pulse Power 500, Invertec V300, and DC650 Pro, with the installation of the optional K442-1 Pul ...

  • Lincoln Electric SVM138-A - page 27

    OPERA TION B-5 B-5 LN-9 GMA Wire Feeder Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC CONTROLS AND SETTINGS Operator controls for LN-9 GMA models are shown in Figure B.3. Controls for LN-9F models are shown in Figure B.4. Re ...

  • Lincoln Electric SVM138-A - page 28

    FIGURE B.3 – WIRE FEEDER CONTROLS FOR LN-9 GMA OPERA TION B-6 B-6 LN-9 GMA Wire Feeder Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC ...

  • Lincoln Electric SVM138-A - page 29

    OPERA TION B-7 B-7 LN-9 GMA Wire Feeder Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC FIGURE B.4 – WIRE FEEDER CONTROLS FOR LN-9F GMA ...

  • Lincoln Electric SVM138-A - page 30

    OPERA TION B-8 B-8 LN-9 GMA Wire Feeder Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC CIRCUIT BREAKER AND GROUNDING LEAD PRO- TECT OR (GLP) RESET SWITCH: These protection circuit devices are located on the front rail of the ...

  • Lincoln Electric SVM138-A - page 31

    If such a grounding lead fault occurs, the meter will still be on and will be reading. The trigger circuit will not operate, however . T o release the circuit, press the "GLP Reset" button. See Figure B.3 or B.4 for the location of this button. The following precautions are recommended to avoid GLP shutdown: • Do not allow the electrode ...

  • Lincoln Electric SVM138-A - page 32

    DRIVE ROLL INST ALLA TION CHANGING DRIVE ROLLS FOR 2-ROLL WIRE FEEDERS T o change drive rolls on a 2-roll wire feeder , refer to Figure B.5 and perform the following steps. NOTE: Although an LN-9 GMA model is shown in Figure B.5, the following procedure also applies to LN-9F GMA models. 1. Rotate the latch knob on the quick release arm. 2. Remove t ...

  • Lincoln Electric SVM138-A - page 33

    CLAMPING COLLAR DRIVE ROLL HALVES SPACER (IF REQ'D) KEY OUTPUT SHAFT GUIDE TUBE DETAIL OUTGOING GUIDE TUBE INSERT OUTGOING GUIDE TUBE LARGE RADIUS DRIVE ROLL INCOMING GUIDE TUBE SMALL RADIUS IDLE ROLL OPERA TION B-11 B-11 LN-9 GMA Wire Feeder Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Mast ...

  • Lincoln Electric SVM138-A - page 34

    CHANGING DRIVE ROLLS FOR 4-ROLL WIRE FEEDERS T o change drive rolls on a 4-roll wire feeder , refer to Figure B.6 and perform the following steps. NOTE: Although an LN-9 GMA model is shown in Figure B.6 , the following procedure also applies to LN-9F GMA models. 1. Remove the gun and cable from the conductor block on the feeder by loosening the han ...

  • Lincoln Electric SVM138-A - page 35

    OPERA TION B-13 B-13 LN-9 GMA Wire Feeder Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC CLAMPING COLLAR SP ACER (IF REQUIRED) DRIVE ROLL HAL VES KEY OUTPUT SHAFT OUTGOING GUIDE TUBE INSERT OUTGOING GUIDE TUBE IDLE ROLL SMALL ...

  • Lincoln Electric SVM138-A - page 36

    OPERA TION B-14 B-14 LN-9 GMA Wire Feeder Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC WIRE LOADING Loading a 22 to 30 Lb. (10 to 14 kg) Readi-Reel Package Using the Molded Plastic K363-P Readi-Reel Adapter: The Spindle sho ...

  • Lincoln Electric SVM138-A - page 37

    LOADING A 10 TO 30 LB. (4.5 T O 14 KG) SPOOL (12" DIAMETER) OR 13 - 14 LB. (6 KG) INNERSHIELD COIL: The Spindle should be located in the LOWER mounting hole. (For 8" (200 mm) spools, a K468 spindle adapter must first be slipped onto spindle.) (For 13-14 lb. (6 Kg) Innershield coils, a K435 Coil Adapter must be used). 1) Depress the Releas ...

  • Lincoln Electric SVM138-A - page 38

    LOADING 50 AND 60 LB. COILS ON 1” SPINDLE (K299 or K303 Wire Reel Stand) ADJUST ABLE WIRE REEL BRAKE The mount for standard 50 and 60 pound electrode coils includes a two position brake assembly . Generally the brake should be a the inner position (nearest to the wire reel shaft) for wire feed speeds below 400 in/min. It should be at the outer po ...

  • Lincoln Electric SVM138-A - page 39

    FEEDING ELECTRODE AND BRAKE ADJUSTMENT 1. T urn the reel until the free end of the electrode is accessible. 2. While tightly holding the electrode, cut off the bent end. Straighten the first 6 inches. 3. Cut off the first inch. Insert the free end through the incoming guide tube. 4. Insert the free end through the incoming guide tube. 5. Press the ...

  • Lincoln Electric SVM138-A - page 40

    OPERA TION B-18 B-18 LN-9 GMA Wire Feeder Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC IDLE ROLL PRESSURE SETTING The idle roll pressure is set at the factory backed out two turns from full pressure for 2-roll feeders, thre ...

  • Lincoln Electric SVM138-A - page 41

    MAKING A TEST WELD AND ADJUSTING LN-9 GMA RESPONSE AND ST ARTING CHARACTERISTICS ADJUST THE POWER SOURCE DC-250, DC-400, or DC-600 1. Connect electrode lead to terminal of desired polarity . 2. Set toggle switch to same polarity as the electrode cable connection. 3. Set toggle switch to "Output Control Remote." 4. Set mode switch to the d ...

  • Lincoln Electric SVM138-A - page 42

    VOL T AGE CONTROL RESPONSE The LN-9 GMA is provided with selectable voltage con- trol response. Proper setting depends on the power source and process being used. Refer to the appropri- ate power source connection diagram for the proper connection of the jumpers located on the LN-9 GMA V oltage Board. T o change the voltage control response: a) T u ...

  • Lincoln Electric SVM138-A - page 43

    MAKING A WELD 1. Inch the electrode through the gun and cable and then cut the electrode within approximately 3/8" of the end of the contact tip for solid wire and within approximately 3/4" of the extension guide for cored wire. 2. Connect the work cable to the metal to be welded. The work cable must make good electrical contact to the wo ...

  • Lincoln Electric SVM138-A - page 44

    NOTES B-22 B-22 LN-9 GMA Wire Feeder Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC ...

  • Lincoln Electric SVM138-A - page 45

    T ABLE OF CONTENTS - ACCESSORIES SECTION - Section C-1 Section C-1 LN-9 GMA Wire Feeder Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC Accessories Auxiliary Equipment Contacts .....................................................................................................C-2 Optional Equipment and Accessori ...

  • Lincoln Electric SVM138-A - page 46

    AUXILIAR Y EQUIPMENT CONT ACTS The power for 1 15 volt AC auxiliary equipment can be obtained from the terminals inside the LN-9 GMA con- trol box. The contacts are “hot” whenever the trigger is pressed or the unit is welding. The current draw of this circuit must not exceed 1/4 ampere. TURN THE INPUT POWER TO THE POWER SOURCE OFF A T THE DISCO ...

  • Lincoln Electric SVM138-A - page 47

    A TT ACHING THE WIRE REEL ST ANDS The mounting hardware for mounting the stands is included with the LN-9 GMA. Screws and washers are inserted in their respective mounting holes. T o con- nect: 1. Remove the three 3/8 in. hex head bolts from the back of the wire feed unit. 2. Place the wire reel mounting stand mounting bracket in position against t ...

  • Lincoln Electric SVM138-A - page 48

    UNIVERSAL WIRE REEL ST AND (K1524-1) Includes a 2" (51mm) O.D. Spindle with adjustable brake and two locations for mounting the spindle to allow for the mounting of 50 - 60lb, 10 - 30 lb, 13 - 14lb, and 8" O.D. coils with proper spindle adapters. (See OPERA TION section) Capable of being mounted on the top of a suitable power source or su ...

  • Lincoln Electric SVM138-A - page 49

    WIRE FEEDER ACCESSORIES BURNBACK TIMER KIT (K419) Provides a precise control of the electrode burnback at the end of the weld. Prevents crater sticking and provides proper stickout for starting the next weld. Recommended especially when welding with small (0.023-1/16") diameter wire at high wire feed speeds. Also includes a cold inch switch. ( ...

  • Lincoln Electric SVM138-A - page 50

    ACCESSORIES C-6 C-6 LN-9 GMA Wire Feeder Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC GMA TIMER KIT (K418) Provides the following functions: 1. Preflow Control - Provides flow of shielding gas to the work before the arc is ...

  • Lincoln Electric SVM138-A - page 51

    ACCESSORIES C-7 C-7 LN-9 GMA Wire Feeder Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC SWIVEL PLA TFORM (K178-1) For all LN-9 GMA wire reel stand combinations. For mounting wire feeder-wire reel stand assembly on top of suit ...

  • Lincoln Electric SVM138-A - page 52

    K58 MAGNETIC SEP ARA TOR The K58 is a permanent magnet type separator designed to fit the top of the standard fill funnel of the continuous flux feed system. The purpose of the separator is to remove magnetic materials such as mill scale and any other extraneous magnetic materials which may have been recovered along with the flux to be processed. I ...

  • Lincoln Electric SVM138-A - page 53

    ACCESSORIES C-9 C-9 LN-9 GMA Wire Feeder Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC T ABLE C.2 – DRIVE ROLL AND GUIDE TUBE KITS Wire Size Kit 2-Roll 4-Roll Solid Steel Electrode 0.023” - 0.025” (0.6 mm) KP653 - 025S ...

  • Lincoln Electric SVM138-A - page 54

    NOTES C-10 C-10 LN-9 GMA Wire Feeder Return to Section TOC Return to Section TOC Retur n to Section TOC Retur n to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC ...

  • Lincoln Electric SVM138-A - page 55

    T ABLE OF CONTENTS - MAINTENANCE SECTION - Section D-1 Section D-1 LN-9 GMA Wire Feeder Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC Maintenance Routine Maintenance ..................................................................................................................D-2 Drive Rolls and Guide T ubes ...

  • Lincoln Electric SVM138-A - page 56

    SAFETY PRECAUTIONS ELECTRIC SHOCK can kill. • Only qualified personnel should perform this maintenance. • T urn the input supply power OFF at the disconnect switch or fuse box before working on this equipment. • Do not touch electrically hot parts. ROUTINE MAINTENANCE DRIVE ROLLS AND GUIDE TUBES After feeding any coil of wire, inspect the dri ...

  • Lincoln Electric SVM138-A - page 57

    GUN AND CABLE MAINTENANCE For instructions on periodic maintenance for the weld- ing gun and cables, refer to the manual for your specif- ic model of welding gun. PROPER SPEED SENSOR MODULE MOUNTING The LN-9 GMA Speed Sensor Module is a three lead Hall-Ef fect switch device encased in an externally threaded housing. It is screwed into a mounting pl ...

  • Lincoln Electric SVM138-A - page 58

    The following Figures D.2 and D.3 should serve as a guide to determine if a particular gun or switch can be connected to the LN-9 GMA and LN-9F GMA. “A” Diameter Hole to be Concentric to Wire Size .749/.747 (19.0/18.9) in. (mm) Diameter Within .008 (.20) F .I.M. 0.68-5/64 (1.7-2.0) .125 [1/8” (3.2 mm) Drill] 1/16-0.062 (1.6) .078 [5/64” (2. ...

  • Lincoln Electric SVM138-A - page 59

    Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC Section E-1 Section E-1 LN-9 GMA Wire Feeder Theory of Operation ............................................................................................................. Section E General Description ............................................................. ...

  • Lincoln Electric SVM138-A - page 60

    POWER INPUT CIRCUITS The 1 15V AC is applied (usually from the welding power source) via the input connector and through the circuit breaker and R1 resistor to the power board, the T2 trig - ger transformer , and the T1 transformer . The 24V AC developed at the T2 trigger transformer is applied to the trigger board. There it is rectified and regula ...

  • Lincoln Electric SVM138-A - page 61

    TRIGGER AND SHUTDOWN CIRCUIT When the gun trigger switch is activated (closed), the trigger board completes the trigger signal path. This energizes the CR1 relay located on the power board. The CR1 relay activates the wire drive motor and the #2 and #4 circuit, which then activates the Lincoln welding power source. The CR1 relay is also used to ene ...

  • Lincoln Electric SVM138-A - page 62

    ARC VOL T AGE, WIRE SPEED CONTROL AND METERING The arc voltage, which is sensed at the work piece and motor gear box, is connected through a polarity switch to the voltage board. This actual arc voltage is com - pared to the reference preset voltage that is set by the voltage control. The voltage board determines what correction signal needs to be ...

  • Lincoln Electric SVM138-A - page 63

    PRINTED CIRCUIT BOARD FUNCTIONS POWER BOARD The input power (1 15V AC) is applied to the power board, and from that the power board develops the variable DC armature voltage for the permanent mag- net wire drive motor . The SCR circuitry , used to con- trol the motor armature voltage, is also contained on the power board. The relay used to activate ...

  • Lincoln Electric SVM138-A - page 64

    NOTES E-6 E-6 LN-9 GMA Wire Feeder Return to Section TOC Return to Section TOC Retur n to Section TOC Retur n to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC ...

  • Lincoln Electric SVM138-A - page 65

    Retur n to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC Section F-1 Section F-1 LN-9 GMA Wire Feeder T roubleshooting & Repair Section ................................................................................ Section F How to Use T roubleshooting Guide ......................................................... ...

  • Lincoln Electric SVM138-A - page 66

    Retur n to Section TOC Return to Section TOC Retur n to Section TOC Retur n to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC HOW T O USE TROUBLESHOOTING GUIDE Service and repair should be performed by only Lincoln Electric Factory Trained Personnel. Unauthorized repairs performed on this equipment m ...

  • Lincoln Electric SVM138-A - page 67

    ELECTRIC SHOCK can kill. Have an electrician install and service this equipment. T urn the machine OFF before working on equipment. Do not touch electrically hot parts. Sometimes machine failures appear to be due to PC board failures. These problems can sometimes be traced to poor electrical connections. T o avoid prob- lems when troubleshooting an ...

  • Lincoln Electric SVM138-A - page 68

    Retur n to Section TOC Return to Section TOC Retur n to Section TOC Retur n to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC TROUBLESHOOTING & REP AIR F-4 F-4 LN-9 GMA Wire Feeder Observe Safety Guidelines TROUBLESHOOTING GUIDE detailed in the beginning of this manual. CAUTION If for any reason ...

  • Lincoln Electric SVM138-A - page 69

    Retur n to Section TOC Return to Section TOC Retur n to Section TOC Retur n to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC TROUBLESHOOTING & REP AIR F-5 F-5 LN-9 GMA Wire Feeder TROUBLESHOOTING GUIDE Observe Safety Guidelines detailed in the beginning of this manual. CAUTION If for any reason ...

  • Lincoln Electric SVM138-A - page 70

    Retur n to Section TOC Return to Section TOC Retur n to Section TOC Retur n to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC TROUBLESHOOTING & REP AIR F-6 F-6 LN-9 GMA Wire Feeder Observe Safety Guidelines TROUBLESHOOTING GUIDE detailed in the beginning of this manual. CAUTION If for any reason ...

  • Lincoln Electric SVM138-A - page 71

    Retur n to Section TOC Return to Section TOC Retur n to Section TOC Retur n to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC TROUBLESHOOTING & REP AIR F-7 F-7 LN-9 GMA Wire Feeder TROUBLESHOOTING GUIDE Observe Safety Guidelines detailed in the beginning of this manual. CAUTION If for any reason ...

  • Lincoln Electric SVM138-A - page 72

    Retur n to Section TOC Return to Section TOC Retur n to Section TOC Retur n to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC TROUBLESHOOTING & REP AIR F-8 F-8 LN-9 GMA Wire Feeder Observe Safety Guidelines TROUBLESHOOTING GUIDE detailed in the beginning of this manual. CAUTION If for any reason ...

  • Lincoln Electric SVM138-A - page 73

    Retur n to Section TOC Return to Section TOC Retur n to Section TOC Retur n to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC TROUBLESHOOTING & REP AIR F-9 F-9 LN-9 GMA Wire Feeder TROUBLESHOOTING GUIDE Observe Safety Guidelines detailed in the beginning of this manual. CAUTION If for any reason ...

  • Lincoln Electric SVM138-A - page 74

    Retur n to Section TOC Return to Section TOC Retur n to Section TOC Retur n to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC TROUBLESHOOTING & REP AIR F-10 F-10 LN-9 GMA Wire Feeder Observe Safety Guidelines TROUBLESHOOTING GUIDE detailed in the beginning of this manual. CAUTION If for any reaso ...

  • Lincoln Electric SVM138-A - page 75

    Retur n to Section TOC Return to Section TOC Retur n to Section TOC Retur n to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC TROUBLESHOOTING & REP AIR F-11 F-11 LN-9 GMA Wire Feeder TROUBLESHOOTING GUIDE Observe Safety Guidelines detailed in the beginning of this manual. CAUTION If for any reaso ...

  • Lincoln Electric SVM138-A - page 76

    Retur n to Section TOC Return to Section TOC Retur n to Section TOC Retur n to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC F-12 F-12 LN-9 GMA Wire Feeder TROUBLESHOOTING & REP AIR TROUBLESHOOTING GUIDE Observe Safety Guidelines detailed in the beginning of this manual. CAUTION If for any reaso ...

  • Lincoln Electric SVM138-A - page 77

    Retur n to Section TOC Return to Section TOC Retur n to Section TOC Retur n to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC TROUBLESHOOTING & REP AIR F-13 F-13 LN-9 GMA Wire Feeder TROUBLESHOOTING GUIDE Observe Safety Guidelines detailed in the beginning of this manual. PROBLEMS (SYMPTOMS) POSS ...

  • Lincoln Electric SVM138-A - page 78

    TROUBLESHOOTING & REP AIR F-14 F-14 LN-9 GMA Wire Feeder Return to Section TOC Return to Section TOC Retur n to Section TOC Retur n to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC TROUBLESHOOTING GUIDE Observe Safety Guidelines detailed in the beginning of this manual. PROBLEMS (SYMPTOMS) POSSI ...

  • Lincoln Electric SVM138-A - page 79

    Retur n to Section TOC Return to Section TOC Retur n to Section TOC Retur n to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC TROUBLESHOOTING & REP AIR F-15 F-15 LN-9 GMA Wire Feeder TROUBLESHOOTING GUIDE Observe Safety Guidelines detailed in the beginning of this manual. PROBLEMS (SYMPTOMS) POSS ...

  • Lincoln Electric SVM138-A - page 80

    TROUBLESHOOTING & REP AIR F-16 F-16 LN-9 GMA Wire Feeder Return to Section TOC Return to Section TOC Retur n to Section TOC Retur n to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC TROUBLESHOOTING GUIDE Observe Safety Guidelines detailed in the beginning of this manual. PROBLEMS (SYMPTOMS) POSSI ...

  • Lincoln Electric SVM138-A - page 81

    TROUBLESHOOTING & REP AIR F-17 F-17 LN-9 GMA Wire Feeder Return to Section TOC Return to Section TOC Retur n to Section TOC Retur n to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC TROUBLESHOOTING GUIDE Observe Safety Guidelines detailed in the beginning of this manual. PROBLEMS (SYMPTOMS) POSSI ...

  • Lincoln Electric SVM138-A - page 82

    TROUBLESHOOTING & REP AIR F-18 F-18 LN-9 GMA Wire Feeder Return to Section TOC Return to Section TOC Retur n to Section TOC Retur n to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC TROUBLESHOOTING GUIDE Observe Safety Guidelines detailed in the beginning of this manual. PROBLEMS (SYMPTOMS) POSSI ...

  • Lincoln Electric SVM138-A - page 83

    INST ALLA TION F-19 F-19 LN-9 GMA Wire Feeder Return to Section TOC Return to Section TOC Retur n to Section TOC Retur n to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC TROUBLESHOOTING GUIDE Observe Safety Guidelines detailed in the beginning of this manual. PROBLEMS (SYMPTOMS) POSSIBLE AREAS OF MI ...

  • Lincoln Electric SVM138-A - page 84

    TROUBLESHOOTING & REP AIR F-20 F-20 LN-9 GMA Wire Feeder Return to Section TOC Return to Section TOC Retur n to Section TOC Retur n to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC TROUBLESHOOTING GUIDE Observe Safety Guidelines detailed in the beginning of this manual. PROBLEMS (SYMPTOMS) POSSI ...

  • Lincoln Electric SVM138-A - page 85

    TROUBLESHOOTING & REP AIR F-21 F-21 LN-9 GMA Wire Feeder Return to Section TOC Return to Section TOC Retur n to Section TOC Retur n to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC TROUBLESHOOTING GUIDE Observe Safety Guidelines detailed in the beginning of this manual. PROBLEMS (SYMPTOMS) POSSI ...

  • Lincoln Electric SVM138-A - page 86

    TROUBLESHOOTING & REP AIR F-22 F-22 LN-9 GMA Wire Feeder Return to Section TOC Return to Section TOC Retur n to Section TOC Retur n to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC TROUBLESHOOTING GUIDE Observe Safety Guidelines detailed in the beginning of this manual. PROBLEMS (SYMPTOMS) POSSI ...

  • Lincoln Electric SVM138-A - page 87

    TROUBLESHOOTING & REP AIR F-23 F-23 LN-9 GMA Wire Feeder Return to Section TOC Return to Section TOC Retur n to Section TOC Retur n to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC TROUBLESHOOTING GUIDE Observe Safety Guidelines detailed in the beginning of this manual. PROBLEMS (SYMPTOMS) POSSI ...

  • Lincoln Electric SVM138-A - page 88

    Retur n to Section TOC Return to Section TOC Retur n to Section TOC Retur n to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC TROUBLESHOOTING & REP AIR F-24 F-24 LN-9 GMA Wire Feeder T1 TRANSFORMER TEST W ARNING Service and repair should be performed by only Lincoln Electric factory trained perso ...

  • Lincoln Electric SVM138-A - page 89

    Retur n to Section TOC Return to Section TOC Retur n to Section TOC Retur n to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC TROUBLESHOOTING & REP AIR F-25 F-25 LN-9 GMA Wire Feeder T1 TRANSFORMER TEST (continued) TEST PROCEDURE 1. Remove input power to the LN-9 GMA wire feeder . 2. Using the ph ...

  • Lincoln Electric SVM138-A - page 90

    Retur n to Section TOC Return to Section TOC Retur n to Section TOC Retur n to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC TROUBLESHOOTING & REP AIR F-26 F-26 LN-9 GMA Wire Feeder 6. Using the volt/ohmmeter , check for 10V AC at secondary leads #601 and #602. T ypically , these leads are yello ...

  • Lincoln Electric SVM138-A - page 91

    Retur n to Section TOC Return to Section TOC Retur n to Section TOC Retur n to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC TROUBLESHOOTING & REP AIR F-27 F-27 LN-9 GMA Wire Feeder W ARNING T2 TRANSFORMER TEST Service and repair should be performed by only Lincoln Electric factory trained perso ...

  • Lincoln Electric SVM138-A - page 92

    Retur n to Section TOC Return to Section TOC Retur n to Section TOC Retur n to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC TROUBLESHOOTING & REP AIR F-28 F-28 LN-9 GMA Wire Feeder T2 TRANSFORMER TEST (continued) FIGURE F .3 – “PROTECTION CIRCUIT TROUBLESHOOTING” NAMEPLA TE PROTECTION CIR ...

  • Lincoln Electric SVM138-A - page 93

    Retur n to Section TOC Return to Section TOC Retur n to Section TOC Retur n to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC TROUBLESHOOTING & REP AIR F-29 F-29 LN-9 GMA Wire Feeder T2 TRANSFORMER TEST (continued) 4. Locate the T2 transformer primary lead #32A connected to the 5 amp circuit brea ...

  • Lincoln Electric SVM138-A - page 94

    TROUBLESHOOTING & REP AIR F-30 F-30 LN-9 GMA Wire Feeder Return to Section TOC Return to Section TOC Retur n to Section TOC Retur n to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC T2 TRANSFORMER TEST (continued) Electric Shock can kill. • W ith power applied, there are high voltages inside th ...

  • Lincoln Electric SVM138-A - page 95

    Retur n to Section TOC Return to Section TOC Retur n to Section TOC Retur n to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC TROUBLESHOOTING & REP AIR F-31 F-31 LN-9 GMA Wire Feeder W ARNING WIRE DRIVE MOT OR TEST Service and repair should be performed by only Lincoln Electric factory trained pe ...

  • Lincoln Electric SVM138-A - page 96

    Retur n to Section TOC Return to Section TOC Retur n to Section TOC Retur n to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC TROUBLESHOOTING & REP AIR F-32 F-32 LN-9 GMA Wire Feeder WIRE DRIVE MOT OR TEST (continued) FIGURE F .6 – LEAD #539 AND #541 A T POWER PC BOARD TERMINAL STRIP LEAD 539 L ...

  • Lincoln Electric SVM138-A - page 97

    ELECTRIC SHOCK can kill. • W ith power applied, there are high voltages inside the wire feeder . Do not reach into the wire feeder or touch any internal part of the wire feeder while power is applied. 6. Apply 1 15 V AC power . 7. W ith the gun trigger activated or the gun ter- minals jumpered together (see the Wiring Diagram), check the motor ar ...

  • Lincoln Electric SVM138-A - page 98

    HALL EFFECT MODULE TEST AND ALIGNMENT Service and repair should be performed by only Lincoln Electric factory trained personnel. Unauthorized repairs performed on this equipment may result in danger to the technician or machine operator and will invalidate your factory warranty . For your safety and to avoid elec- trical shock, please observe all s ...

  • Lincoln Electric SVM138-A - page 99

    Retur n to Section TOC Return to Section TOC Retur n to Section TOC Retur n to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC TROUBLESHOOTING & REP AIR F-35 F-35 LN-9 GMA Wire Feeder HALL EFFECT MODULE FEEDBACK TEST PROCEDURE 1. Remove the input power to the LN-9 GMA wire feeder . 2. Remove any e ...

  • Lincoln Electric SVM138-A - page 100

    ELECTRIC SHOCK can kill. • W ith power applied, there are high voltages inside the wire feeder . Do not reach into the wire feeder or touch any internal part of the wire feeder while power is applied. 6. Apply input power to the LN-9 GMA and test for 15VDC at leads #525(+) to #510(-). This is the supply voltage from the control PC board to the ha ...

  • Lincoln Electric SVM138-A - page 101

    HALL EFFECT MODULE ALIGNMENT TEST PROCEDURE The LN-9 GMA wire speed sensor is a three lead hall-effect device encased in an externally threaded housing. It is screwed into a mounting plate on the motor side of the wire drive gear- box. See Figure F .8. 1. Remove the input power to the LN-9 GMA. 2. Check that the module mounting plate is screwed sec ...

  • Lincoln Electric SVM138-A - page 102

    Retur n to Section TOC Return to Section TOC Retur n to Section TOC Retur n to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC TROUBLESHOOTING & REP AIR F-38 F-38 LN-9 GMA Wire Feeder W ARNING VOL TMETER ACCURACY TEST Service and repair should be performed by only Lincoln Electric factory trained ...

  • Lincoln Electric SVM138-A - page 103

    Retur n to Section TOC Return to Section TOC Retur n to Section TOC Retur n to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC TROUBLESHOOTING & REP AIR F-39 F-39 LN-9 GMA Wire Feeder VOL TMETER ACCURACY TEST (continued) FIGURE F .9 – VOL TMETER CONNECTION POINT TEST PROCEDURE Perform the follow ...

  • Lincoln Electric SVM138-A - page 104

    ELECTRIC SHOCK can kill. • W ith power applied, there are high voltages inside the wire feeder . Do not reach into the wire feeder or touch any internal part of the wire feeder while power is applied. 3. W ith the LN-9 GMA gun trigger closed or the gun terminals jumpered together (see the W iring Diagram), the test meter reading should match the ...

  • Lincoln Electric SVM138-A - page 105

    Retur n to Section TOC Return to Section TOC Retur n to Section TOC Retur n to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC TROUBLESHOOTING & REP AIR F-41 F-41 LN-9 GMA Wire Feeder W ARNING METER CIRCUIT ACCURACY TEST Service and repair should be performed by only Lincoln Electric factory train ...

  • Lincoln Electric SVM138-A - page 106

    Retur n to Section TOC Return to Section TOC Retur n to Section TOC Retur n to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC TROUBLESHOOTING & REP AIR F-42 F-42 LN-9 GMA Wire Feeder METER CIRCUIT ACCURACY TEST (continued) FIGURE F .10 – METER PC BOARD LOCA TIONS AND COVER MOUNTING SCREWS TEST ...

  • Lincoln Electric SVM138-A - page 107

    Retur n to Section TOC Return to Section TOC Retur n to Section TOC Retur n to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC TROUBLESHOOTING & REP AIR F-43 F-43 LN-9 GMA Wire Feeder METER CIRCUIT ACCURACY TEST (continued) 5. T est for AC supply to the meter PC board. Check for 8 to 1 1 V AC from ...

  • Lincoln Electric SVM138-A - page 108

    Retur n to Section TOC Return to Section TOC Retur n to Section TOC Retur n to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC TROUBLESHOOTING & REP AIR F-44 F-44 LN-9 GMA Wire Feeder METER CIRCUIT ACCURACY TEST (continued) T est Digital Meter Accuracy . (For LN-9 GMA models above code 7980 with s ...

  • Lincoln Electric SVM138-A - page 109

    T est Meter PC Board Wire Feed Speed Accuracy . (Metric Models Only) 1. Use a test meter with at least 3-1/2 digits and ± 0.5% accuracy . 2. Connect the + probe to lead called for in the table below and the - probe to lead #510C. NOTE: The coating will have to be removed from the test points. 3. W ith the meter in SET M/MIN, adjust the speed contr ...

  • Lincoln Electric SVM138-A - page 110

    Retur n to Section TOC Return to Section TOC Retur n to Section TOC Retur n to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC TROUBLESHOOTING & REP AIR F-46 F-46 LN-9 GMA Wire Feeder W ARNING WIRE SPEED ACCURACY TEST Service and repair should be performed by only Lincoln Electric factory trained ...

  • Lincoln Electric SVM138-A - page 111

    Retur n to Section TOC Return to Section TOC Retur n to Section TOC Retur n to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC TROUBLESHOOTING & REP AIR F-47 F-47 LN-9 GMA Wire Feeder WIRE SPEED ACCURACY TEST (continued) TEST PROCEDURE Perform the following checks with the LN-9 GMA wire feeder con ...

  • Lincoln Electric SVM138-A - page 112

    Retur n to Section TOC Return to Section TOC Retur n to Section TOC Retur n to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC TROUBLESHOOTING & REP AIR F-48 F-48 LN-9 GMA Wire Feeder W ARNING OUT OF VOL T AGE RANGE SHUT DOWN TEST Service and repair should be performed by only Lincoln Electric fac ...

  • Lincoln Electric SVM138-A - page 113

    Retur n to Section TOC Return to Section TOC Retur n to Section TOC Retur n to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC TROUBLESHOOTING & REP AIR F-49 F-49 LN-9 GMA Wire Feeder OUT OF VOL T AGE RANGE SHUT DOWN TEST (continued) FIGURE F .12 – VOL T AGE PC BOARD WITH JUMPERS BYPASS PINS 1/8 ...

  • Lincoln Electric SVM138-A - page 114

    TROUBLESHOOTING & REP AIR F-50 F-50 LN-9 GMA Wire Feeder Return to Section TOC Return to Section TOC Retur n to Section TOC Retur n to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC OUT OF VOL T AGE RANGE SHUT DOWN TEST (continued) 8. If the ACTUAL voltage reading is zero, the sensing leads may b ...

  • Lincoln Electric SVM138-A - page 115

    Retur n to Section TOC Return to Section TOC Retur n to Section TOC Retur n to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC TROUBLESHOOTING & REP AIR F-51 F-51 LN-9 GMA Wire Feeder W ARNING GENERAL POWER SUPPL Y TESTS Service and repair should be performed by only Lincoln Electric factory train ...

  • Lincoln Electric SVM138-A - page 116

    Retur n to Section TOC Return to Section TOC Retur n to Section TOC Retur n to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC TROUBLESHOOTING & REP AIR F-52 F-52 LN-9 GMA Wire Feeder GENERAL POWER SUPPL Y TESTS (continued) TEST PROCEDURE 1. Remove input power to the LN-9 GMA wire feeder . 2. Usin ...

  • Lincoln Electric SVM138-A - page 117

    TROUBLESHOOTING & REP AIR F-53 F-53 LN-9 GMA Wire Feeder Return to Section TOC Return to Section TOC Retur n to Section TOC Retur n to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC GENERAL POWER SUPPL Y CHECKS CHECKPOINT TEST CONNECTOR LEAD NO. NORMAL LOCA TION DESCRIPTION PLUG PIN NO. ACCEPT AB ...

  • Lincoln Electric SVM138-A - page 118

    Retur n to Section TOC Return to Section TOC Retur n to Section TOC Retur n to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC TROUBLESHOOTING & REP AIR F-54 F-54 LN-9 GMA Wire Feeder W ARNING DIGIT AL METER AND METER PC BOARD REMOV AL AND REPLACEMENT Service and repair should be performed by only ...

  • Lincoln Electric SVM138-A - page 119

    Retur n to Section TOC Return to Section TOC Retur n to Section TOC Retur n to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC TROUBLESHOOTING & REP AIR F-55 F-55 LN-9 GMA Wire Feeder FIGURE F .13 – METER P ANEL ASSEMBL Y SCREWS MOUNTING SCREWS METER DIGIT AL METER AND METER PC BOARD REMOV AL AN ...

  • Lincoln Electric SVM138-A - page 120

    Retur n to Section TOC Return to Section TOC Retur n to Section TOC Retur n to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC TROUBLESHOOTING & REP AIR F-56 F-56 LN-9 GMA Wire Feeder FIGURE F .15 – METER PC BOARD REMOV AL 4 MOUNTING NUTS DIGIT AL METER AND METER PC BOARD REMOV AL AND REPLACEMEN ...

  • Lincoln Electric SVM138-A - page 121

    Retur n to Section TOC Return to Section TOC Retur n to Section TOC Retur n to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC TROUBLESHOOTING & REP AIR F-57 F-57 LN-9 GMA Wire Feeder W ARNING REED SWITCH (CR2) REMOV AL AND REPLACEMENT Service and repair should be performed by only Lincoln Electri ...

  • Lincoln Electric SVM138-A - page 122

    Retur n to Section TOC Return to Section TOC Retur n to Section TOC Retur n to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC TROUBLESHOOTING & REP AIR F-58 F-58 LN-9 GMA Wire Feeder PROCEDURE 1. Remove input power to the LN-9 GMA wire feeder . 2. Lift the right side cover assembly . 3. Locate th ...

  • Lincoln Electric SVM138-A - page 123

    Retur n to Section TOC Return to Section TOC Retur n to Section TOC Retur n to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC TROUBLESHOOTING & REP AIR F-59 F-59 LN-9 GMA Wire Feeder W ARNING T1 TRANSFORMER REMOV AL AND REPLACEMENT Service and repair should be performed by only Lincoln Electric f ...

  • Lincoln Electric SVM138-A - page 124

    Retur n to Section TOC Return to Section TOC Retur n to Section TOC Retur n to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC TROUBLESHOOTING & REP AIR F-60 F-60 LN-9 GMA Wire Feeder PROCEDURE 1. Remove input power to the LN-9 GMA. 2. Using the phillips head screwdriver remove the screws holding ...

  • Lincoln Electric SVM138-A - page 125

    Retur n to Section TOC Return to Section TOC Retur n to Section TOC Retur n to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC TROUBLESHOOTING & REP AIR F-61 F-61 LN-9 GMA Wire Feeder 6. Disconnect leads #526 and #527 from the power PC board terminals. See Figure F .18. T1 TRANSFORMER REMOV AL AND ...

  • Lincoln Electric SVM138-A - page 126

    Retur n to Section TOC Return to Section TOC Retur n to Section TOC Retur n to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC TROUBLESHOOTING & REP AIR F-62 F-62 LN-9 GMA Wire Feeder 8. Remove the two phillips head screws from the control PC board mounting panel. 9. Using the 1 1/32" wrench, ...

  • Lincoln Electric SVM138-A - page 127

    TROUBLESHOOTING & REP AIR F-63 F-63 LN-9 GMA Wire Feeder Return to Section TOC Return to Section TOC Retur n to Section TOC Retur n to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC T1 TRANSFORMER REMOV AL AND REPLACEMENT (continued) 1 1. Using the 5/16" wrench, remove the nuts and lockwashe ...

  • Lincoln Electric SVM138-A - page 128

    F-64 F-64 LN-9 GMA Wire Feeder Return to Section TOC Return to Section TOC Retur n to Section TOC Retur n to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC TROUBLESHOOTING & REP AIR DRIVE MOT OR REMOV AL AND REPLACEMENT W ARNING Service and repair should be performed by only Lincoln Electric fact ...

  • Lincoln Electric SVM138-A - page 129

    F-65 F-65 LN-9 GMA Wire Feeder Return to Section TOC Return to Section TOC Retur n to Section TOC Retur n to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC TROUBLESHOOTING & REP AIR DRIVE MOT OR REMOV AL AND REPLACEMENT (continued) PROCEDURE 1. Remove input power to the LN-9 GMA wire feeder . 2. ...

  • Lincoln Electric SVM138-A - page 130

    F-66 F-66 LN-9 GMA Wire Feeder Return to Section TOC Return to Section TOC Retur n to Section TOC Retur n to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC TROUBLESHOOTING & REP AIR DRIVE MOT OR REMOV AL AND REPLACEMENT (continued) 1 1. Remove the three screws and lock washers that hold the glast ...

  • Lincoln Electric SVM138-A - page 131

    TROUBLESHOOTING & REP AIR F-67 F-67 LN-9 GMA Wire Feeder Return to Section TOC Return to Section TOC Retur n to Section TOC Retur n to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC 12. Lift the right side cover assembly and care- fully lift and slide the motor and wire drive assembly partially o ...

  • Lincoln Electric SVM138-A - page 132

    F-68 F-68 LN-9 GMA Wire Feeder Return to Section TOC Return to Section TOC Retur n to Section TOC Retur n to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC TROUBLESHOOTING & REP AIR DRIVE MOT OR REMOV AL AND REPLACEMENT (continued) 15. W ith the slot head screwdriver , remove the three screws, lo ...

  • Lincoln Electric SVM138-A - page 133

    TROUBLESHOOTING & REP AIR F-69 F-69 LN-9 GMA Wire Feeder Return to Section TOC Return to Section TOC Retur n to Section TOC Retur n to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC RETEST AFTER REP AIR Retest the LN-9 GMA wire feeder: If it fails any test and the test requires removing or replac ...

  • Lincoln Electric SVM138-A - page 134

    NOTES F-70 F-70 LN-9 GMA Wire Feeder Return to Section TOC Return to Section TOC Retur n to Section TOC Retur n to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC ...

  • Lincoln Electric SVM138-A - page 135

    ELECTRICAL DIAGRAMS G-1 G-1 LN-9 GMA Wire Feeder Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC Theory of Operation ................................................................................................................Section G Wiring Diagram-LN-9 GMA ................................................... ...

  • Lincoln Electric SVM138-A - page 136

    NOTES G-2 G-2 LN-9 GMA Wire Feeder Return to Section TOC Return to Section TOC Retur n to Section TOC Retur n to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC ...

  • Lincoln Electric SVM138-A - page 137

    G-3 ELECTRICAL DIAGRAMS LN-9 GMA Wiring Diagram-LN-9 GMA CLEVELAND, OHIO U.S.A. 1-10-97G L10247 601 602 510C 518 510 517 519 560 561 562 1 4 3 6 2 5 11 7 8 9 10 12 (J8) (P8) 601 602 510A 510B 518 518 510 517 519 560 561 562 1 2 3 4 5 6 7 8 9 10 11 12 518 562 518 510 C2 517 561 560 519 C3 C1 S6 513 516 512 514 511 N.O. N.O. N.C. 515 S5 943 5 6 2 10 ...

  • Lincoln Electric SVM138-A - page 138

    G-4 ELECTRICAL DIAGRAMS LN-9 GMA G-4 Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC W iring Diagram-LN-9F GMA CLEVELAND, OHIO U.S.A. 1-10-97G L10250 R A B C D E 622 623 (J4) WELD CURRENT REED SWITCH 628 529 CR2 WIRE FEED ...

  • Lincoln Electric SVM138-A - page 139

    G-5 ELECTRICAL DIAGRAMS LN-9 GMA V oltage Board Schematic 5.62K R42 525 500 524 510 510 514 525 510 56.2K R21 D10 15.0K R20 521A 100K R19 530 D11 530 500 332K R22 22.1K R23 (+15V) 522 524 510 TO R107 SHUTDOWN X2 7 6 5 D9 J2 1 J2 2 500 J2 3 TO 5J2 HOT COLD J2 6 INTERLOCK S2b CR1 3 1 SWITCH 521 26.7K R30 (-10V) BYPASS TABS 4.7 35V C12 514 PANEL PLUG ...

  • Lincoln Electric SVM138-A - page 140

    G-6 ELECTRICAL DIAGRAMS LN-9 GMA Power PC Board Schematic 32A 4 504 7 R1 532 M 541 REV DIRECTION S7 SWITCH D3 531 7A 5 541B 531 539B 32A 32A D2 HOT HOT-COLD 2A 524A 500 620 530 620 621 HOT INTERLOCK S2A 9 11 31 3 J1 1 X2 5 6 5W 10V DZ2 14 7 /Q2 D1 VDD Q1 SET 2 CLOCK 2 /Q1 Q2 CLOCK 1 VSS RESET 1 MC14013B SET 1 D2 RESET 2 X1 11 10 1 8 12 2 13 6 4 9 5 ...

  • Lincoln Electric SVM138-A - page 141

    G-7 ELECTRICAL DIAGRAMS LN-9 GMA T rigger PC Board Schematic GENERAL INFORMATION 1W 75V DZ2 2.21K R12 4.75K R14 5 530 DZ- 2 R- 15 17950 M LAST NO. USED ON HOLES SIZES PER E-2056 ChÕge.Sht.No. THE LINCOLN ELECTRIC CO. SUPPLY LABELS VOLTAGE NET C- D- 4 EARTH GROUND CONNECTION CAPACITORS = MFD UNLESS OTHERWISE SPECIFIED) UNLESS OTHERWISE SPECIFIED) ( ...

  • Lincoln Electric SVM138-A - page 142

    G-8 ELECTRICAL DIAGRAMS LN-9 GMA PM Control Schematic 525 15.0K R21 267 R44 520 525 525 525 J -10V -10V +10V +15V +15V +15V +15V +15V -10V +10V THE LINCOLN ELECTRIC CO. DATE DR. CLEVELAND, OHIO U.S.A. 1A, 400V DIODES = LM CHK. NONE X3 7 6 5 50V 4 C8 1.00K R17 1.00M R38 100V .047 C9 15.0K R39 22.1K R30 LM224 X3 4 11 10.0 R43 1.00K R4 C2 18 15V C3 12 ...

  • Lincoln Electric SVM138-A - page 143

    G-9 ELECTRICAL DIAGRAMS LN-9 GMA Meter Board Schematic 1 510 561 2 8 4 510C B8 510B C7 518 517 562 TP5 3 A C E 519 560 WITHOUT AFFECTING CIRCUIT BOARD THIS DIAGRAM MAY NOT SHOW THE EXACT COMPONENTS RESISTORS = Ohms ( THE INTERCHANGEABILITY ( CAPACITORS = MFD ELECTRICAL SYMBOLS PER E1537 UNLESS OTHERWISE SPECIFIED) (UNLESS OTHERWISE SPECIFIED) GENER ...

  • Lincoln Electric SVM138-A - page 144

    G-10 ELECTRICAL DIAGRAMS LN-9 GMA Operating Schematic 1763 12-21-89C 11-9-90D 11-1-91A 1-21-94H 3-25-94A 6-7-96A 8-2-96B LN-9 GMA AND LN-9F GMA OPERATING SCHEMATIC DAD NONE 1763 6-26-86 6-25-92 t UNLESS OTHERWISE SPECIFIED TOLERANCE ON HOLE SIZES PER E2056 ON 2 PLACE DECIMALS IS .02 WITH PUBLISHED STANDARDS. ON 3 PLACE DECIMALS IS .002 ON ALL ANGLE ...

Manufacturer Lincoln Electric Category Welder

Documents that we receive from a manufacturer of a Lincoln Electric SVM138-A can be divided into several groups. They are, among others:
- Lincoln Electric technical drawings
- SVM138-A manuals
- Lincoln Electric product data sheets
- information booklets
- or energy labels Lincoln Electric SVM138-A
All of them are important, but the most important information from the point of view of use of the device are in the user manual Lincoln Electric SVM138-A.

A group of documents referred to as user manuals is also divided into more specific types, such as: Installation manuals Lincoln Electric SVM138-A, service manual, brief instructions and user manuals Lincoln Electric SVM138-A. Depending on your needs, you should look for the document you need. In our website you can view the most popular manual of the product Lincoln Electric SVM138-A.

Similar manuals

A complete manual for the device Lincoln Electric SVM138-A, how should it look like?
A manual, also referred to as a user manual, or simply "instructions" is a technical document designed to assist in the use Lincoln Electric SVM138-A by users. Manuals are usually written by a technical writer, but in a language understandable to all users of Lincoln Electric SVM138-A.

A complete Lincoln Electric manual, should contain several basic components. Some of them are less important, such as: cover / title page or copyright page. However, the remaining part should provide us with information that is important from the point of view of the user.

1. Preface and tips on how to use the manual Lincoln Electric SVM138-A - At the beginning of each manual we should find clues about how to use the guidelines. It should include information about the location of the Contents of the Lincoln Electric SVM138-A, FAQ or common problems, i.e. places that are most often searched by users in each manual
2. Contents - index of all tips concerning the Lincoln Electric SVM138-A, that we can find in the current document
3. Tips how to use the basic functions of the device Lincoln Electric SVM138-A - which should help us in our first steps of using Lincoln Electric SVM138-A
4. Troubleshooting - systematic sequence of activities that will help us diagnose and subsequently solve the most important problems with Lincoln Electric SVM138-A
5. FAQ - Frequently Asked Questions
6. Contact detailsInformation about where to look for contact to the manufacturer/service of Lincoln Electric SVM138-A in a specific country, if it was not possible to solve the problem on our own.

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